Air-supply-valve attachment



. M. C. KIRKPATRICK. 1 AIR-SUPPLY. VALVE ATTACHMENT, APPLICATION FILED JAN.24. 1918.

1,349,210. Patented Aug. 0,192

. UNITED STATES PATENT OFFICE.

MONROE C. KIRKPATRICK, OF FILES VALLEY, TEXAS, ASSIGNOR OF ONE-FOURTH TO TIM KIRKPATRICK AND ONE-FOURTH T0 WILLIAM M. SHIPPEY, BOTH OF ELLIS COUNTY, TEXAS.

AIR-SUPPLY-VALV E ATTACI-IIMENT.

Specification of Letters Patent. Patented Aug, 10, 19,20,

Application filed January 24, 1918. Serial No. 213,457.

To all whom it may concern:

Be it known that I, MONROE C. Krnxrar RICK, a citizen of the United States, residing at Files Valley, in the county of Hill and State of Texas, have invented certain new and useful Improvements in Air-Supply- Valve Attachments, of which the following is a specification.

This invention relates to certain improvements in air supplying attachments for carbureters.

It is customary in certain makes of carbureters now in common use to control the admission of air by a valve which is me chanically operated in conjunction with the throttle valve, therefore the fluctuation of the suction created by the engine does not affect the a' supply and such air supply must be regulated by the driver.

It will be seen under certain conditions it is highly advantageous to automatically supply an increased volume of air to the carbureter and by so doing the efliciency of the motor is increased. The idea involved in this invention is to provide an attachment which may be readily connected with the air inlet of a carbureter whereby a certain amount of air is constantly admitted when the air valve of the carbureter is open, but providing means for increasing the volume of air when adjusting the air valve of the carbureter and to do so in a particular manner.

In carrying out the invention a collar is provided and formed with a transverse partition having a central valve sleeve. The partition is perforated to permit the passage of air therethrough, but the sleeve is normally closed and the passage of air therethrough obstructed. The sleeve is interposed between the air admitting opening of the carbureter and the usual air heating pipe or the latter may be omitted. Under normal conditions the air is supplied through the perforations, but an increased suction will unseat a valve in the sleeve and thus admit an additional supply of air without adjusting the air valve of the carbureter.

The invention will be more readily understood from a reading of the following specification and by reference to the accompanying drawings, in which an example of the invention is illustrated, and wherein Figure 1 is a view of a carbureter with the heating pipe connected thereto by means of an attachment constructed in accordance with this invention.

Fig. 2 is a longitudinal sectional view of the attachment and component parts, and

Fig. 3 is a transverse sectional view on the line 33 of Fig. 2.

In the drawings the numeral 1 designates a carburetor having an air inlet boss 2 in which a valve 3 is I pivoted in the usual manner.

In applying this invention an attachment is constructed .in the form of a collar 4: which fits over and receives the boss 2. A set screw 5 is mounted in the car and may be tightened so as to engage the boss and fasten the collar thereon. The usual hot air pipe 6 is inserted in the other end of the collar or where such pipe is not used the collar may be left open. At the central portion of the collar a,transverse partition 7 is secured and is provided with a central valve sleeve 8 extending from one side toward the receiving end of the car and projecting beyond the same if necessary. As shown in Fig. 2 this sleeve projects into the pipe 6. The said sleeve surrounds an open ing 9 in the partition and has its outer end contracted to form a seat for a ball valve 10 which is held in its seat by a coil spring 11 confined in said sleeve. The valve 10 somewhat smaller than the internal diameter of the sleeve so that air might pass said valve when it is unseat-ed. The partition 7 is provided with a plurality of spaced perforations or ports 12 surrounding the sleeve.

It will be seen that normally the valve 10 closes the sleeve but air may freely pass through the perforations 12 as the valve 3 of the carburetor is open. This will supply sufficient air for the operation of the engine under certain conditions. Iowever when the suction is increased and a more rarefied mixture is desirable the valve 10 will be drawn inward against the tension of its spring and an increased quantity or volume of air supplied without any mechanical adjustment of the valve 3 or the throttle valve. This will result not only in a more efiicient operation of the motor but in the saving of fuel and the engine will be more powerful and will run better. The attachment may be readily and quickly applied or removed and is inexpensive to produce.

The foregoing description an'd'illustration clearly express the invention, but it is to be understood that said illustration is merely an enemplification and the invention may be carried out'in various ways.

What I clalm 1s,

1. An air supply attachment for a car bureter, comprising a collar adapted to receive in one end thereof the inlet of the carbureter, said collar having its'periphery imperforate and belng straight and havlng its opposite ends openfor providing a straight ing longitudinally within said collar and see cured t0 the partition and surrounding said opening, said valve sleeve havlng its free end'extending inwardly to-providea valve seat, a valve arranged within thevalve sleeve toengage the-valve seat, and a spring arranged within the valve sleeve and engaging the'valve. r

2. An air supply attachment for a car bureter, comprising acollar adapted to receive in one end thereof the inlet of the carburetor, means to clamp the collar to the inlet, saidcollar having its periphery'imperforate and being straightand having its opposite ends open for providing a straight open ended bore, a transverse partition arranged Within the.collar and spaced from the ends thereof and provided with a substantially central opening and apertures surrounding the openings, a valve sleeve extending longitudinally within said collar and secured to the partition and surround ing said opening said valve sleeve having itsfree end extending inwardly to provide a valve seat, avalve'arranged within the valve sleeve to engage the valve seat, a spring arranged within the valve sleeveand engagingthe valve, and a hot air supply pipe having telescoping engagement with the opposite open end of the collar. o

In testimony whereof I aflix my signature.

MONROE c. KIRKPATRICK. 

